204 
for making certain kinds of fiber hats), fig, grapevines from north 
and south Africa, date palm, coconut palm, chocolate tree, coffee, 
tea, ginger, bamboo, mahogany, balsa, cocaine plant, black pepper, 
annatto (used in coloring butter and cheese), cardamom, olive, 
urian, mango, sugar cane, avocado (so- 
tl 
pomegranate, logwood, « 
called “alligator pear”), West Indian and other rubber plants, 
banyan, religious fig of India, and numerous others. 
It may be of interest to teachers that the nine extant genera of 
cycads are now represented in House 12. To reach the Cyead 
House take the first door to the /eft after entering the central or 
Fconomic Tlouse and pass through to the end house. 
The Conservatories are open April 1 to October 31, 10 a.m.— 
4:30 p.m. (Sundays, 2-4 :30) ; November 1 to March 31, 10 a.m— 
4 p.m. (Sundays, 2-4). 
Herbarium 
The Garden herbarium consists at present of about 200,000 
specimens, including phanerogams, ferns, mosses, liverworts, 
lichens, parasitic and other fungi, algae, and myxomycetes. This 
collection may be consulted daily (except Sundays and holidays ) 
from 9 a.m. until 5 p.m., Saturdays from 9 a.m. to 12m. Speci- 
mens submitted for identification will be gladly received. 
Library 
The rapidly growing library of the Garden comprises at present 
more than 17,000 volumes and more than 13,000 pamphlets. This 
is not a circulating library, but is open free for consultation to all 
persons daily (except Sundays and holidays) from 9 a.m. until 
5 p.m. (Saturdays, 9 to 12). More than 900 periodicals and serial 
publications devoted to botany and closely related subjects are 
regularly received. These include the transactions of scientific 
societies from all quarters of the globe; the bulletins, monographs, 
reports, and other publications of various departments of the 
United States Government, as well as those of foreign govern- 
ments, and of all state agricultural experiment stations and agricul- 
tural colleges; the publications of research laboratories, universi- 
ties, botanic gardens, and other scientific institutions of the world, 
